Sheet layouts are depedant on the number of cards being printed in a rarity, the product being printed, and many other factors
If you need extra Credits, try picking up 400 codes of a set that you havent collected on Live yet, like Sword and Shield, to get a bunch of extra Credits (and cards to complete your collection)
On a broader scale, some types had been rolled into others for simplicity - Poison counting as Psychic for example - but these cards took it further, ranging from Metal-type Eevees to a Lightning-type Golduck
Each turn, you can tap Vannifar and sacrifice another creature to tutor a creature from your deck that costs one more mana directly into play
Snivy, Tepig, and Oshawott
Vintage holos, rare promos, and major modern chase cards also tend to perform better when the grade is high